s1_goto_dir(){
cd "$1" || return 1
}

s2_touch_empty_file_with_given_name(){
touch "$1"
}

s3_make_directorise(){
mkdir -p projects/git
mkdir -p projects/backup
}

s4_create_6_files(){
cd projects || return 1
touch linux1_centos linux1_redhat linux1_c_programming linux2_centos linux2_redhat linux2_c_programming
}

s5_make_directories_in_git(){
cd git || return 1
mkdir linux1 linux2
}

s6_move_files_to_dir_1_or_2(){
mv projects/linux1_* projexts/git/linux1/
mv projects/linux2_* projects/git/linux2/
}

s7_create_package_and_compress(){
tar -czvf projects/backup/git.tar.gz projects/git
}

s8_delete_dir_git(){
rm -rf projects/git
}

s9_recover_from_git_tar_gz_backup(){
tar -zxvf projects/backup/git.tar.gz -C projects
}

s10_create_package_and_compress(){
tar -jcvf projects/backup/git.tar/bz2 projects/git
}

s11_find_and_sort_alphabetically_all_created_files_and_dirs(){
find ./projects -mindepth 1 | sort
}

s12_get_next_15_minutes_boundary(){
date -d 'next 15 minutes' +'%Y-%m-%d_%H:%M:%S'
}

